Very unlikely you find a catcher on the market that would be productive. O'Hoppe, Thaiss and Wallach would be solid. You would just have to DFA Wallach and hope he is unclaimed. He has in the past.
I do not understand upgrade at catcher with O'Hoppe coming back. My view is only having 3 OF and who knows when Trout is coming back. Rengifo is 4th OF now. If any injury to Renfroe, Moniak or Grichuk halos in trouble.
My concern is OF. If Trout does not come back until end of August using Moniak, Grichuk and Renfroe. Rengifo becomes 4th OF. Many do not like him in OF. Nothing on condition of Adell and Moniak due for a slump.
Does it not seem like so many trades before actual trade deadline this year. Usually most deals happen on last day but this year started early thanks to Perry Minasian. Soon as halos announced they are keeping Ohtani trades just started happening and it's been not stop. I think Dodgers will have to make a big splash soon. Can see one big move from halos coming. Have I mentioned that already?